Hydrothermal preparation of diatomaceous earth combined with calcium silicate hydrate gels

Hirotaka Maeda, Emile Hideki Ishida

研究成果: Article査読

21 被引用数 (Scopus)

抄録

A novel composite for the removal of color in waste water was prepared by subjecting slurries consisting diatomaceous earth and slaked lime to a hydrothermal reaction at 180. °C. Subsequently, calcium silicate hydrate gels covered the surface of diatomaceous earth due to the reaction between the amorphous silica of diatomaceous earth and slaked lime. The formation of calcium silicate hydrate gels led to an increase in the specific surface area. The composites showed higher methylene blue adsorption capacity compared with diatomaceous earth. The improved adsorption capacity of the composites depended on the amount of the calcium silicate hydrate gels and their silicate anion chain-lengths.

本文言語English
ページ(範囲)858-861
ページ数4
ジャーナルJournal of Hazardous Materials
185
2-3
DOI
出版ステータスPublished - 2011 1 30

ASJC Scopus subject areas

  • 環境工学
  • 環境化学
  • 廃棄物管理と処理
  • 汚染
  • 健康、毒物学および変異誘発

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